Abstract: Many papers have been proposed in order to increase the wireless sensornetworks performance; This kind of network has limited resources, where theenergy in each sensor came from a small battery that sometime is hard to bereplaced or recharged. Transmission energy is the most concern part where thehigher energy consumption takes place. Clustered hierarchy has been proposed inmany papers; in most cases, it provides the network with better performancethan other protocols. In our paper, first we discuss some of techniques,relates to this protocol, that have been proposed for energy efficiency; someof them were proposed to provide the network with more security level. Ourproposal then suggests some modifications to some of these techniques toprovide the network with more energy saving that should lead to highperformance; also we apply our technique on an existing one that proposed toincrease the security level of cluster sensor networks.